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Imagerie de photoelectrons, sonde de la dynamique: des atomes ... aux agregats

Abstract : This thesis concerns the study of the desexcitation of clusters and atoms by photoelectron imaging. The first part is interested in thermionic emission of a finite size system. A 3D-imaging set-up allows us to measure the time evolution of the kinetic energy spectrum of electrons emitted from different clusters (Wn-, Cn-, C60). Then we have a direct acces to the fundamental quantities which caracterize this statistical emission : the temperature of the finite heat bath and the decay rate. The second part concerns the ionization of atomic Rydberg states placed in a static electric field. We performed the first experiment of photoionization microscopy which allows to obtain a picture which is the macroscopic projection of the electronic wave function. Then we have acces to the detail of the photoionization and particularly to the quantum properties of the electron usually confined at the atomic scale.
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Contributor : Franck Lepine <>
Submitted on : Friday, July 9, 2004 - 4:05:20 PM
Last modification on : Thursday, October 15, 2020 - 9:00:22 AM
Long-term archiving on: : Friday, April 2, 2010 - 8:23:37 PM


  • HAL Id : tel-00006433, version 1



Franck Lepine. Imagerie de photoelectrons, sonde de la dynamique: des atomes ... aux agregats. Physique Atomique [physics.atom-ph]. Université Claude Bernard - Lyon I, 2003. Français. ⟨tel-00006433⟩



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